Radio tube extractor



P 18, 1951 J. w. WHITNEY 2,568,210

RADIO TUBE EXTRACTOR Filed Dec. 6, 1945 Inventor Jas epli William Wfil'ilify Patented Sept. 18, 1951 OFFICE RADIO TUBE EXTRACTOR Joseph William Whitney, Conway, Pa.

Application December 6, 1945, Serial No. 633,139

1 Claim. 1

This invention relates to a radio tube extractor.

A primary object of this invention is the provision of an improved radio tube extractor whereby a radio tube may be removed from the socket without the necessity of touching the tube with the fingers, thus avoiding the possibility of burning the fingers.

A further object of the invention is the provision of such an extractor which may be utilized in relatively close confined spaces, to lift the tube from its socket, or to insert the same therein, if desired.

Still another object of the invention is the provision of such an extractor adapted particularly for use with tubes having flanges around the bases, thereof, and comprising an improvement over my Patent Number 2,380,136, for a similar device, but which necessitated insertion of flanges under the base of the tube.

Other objects reside in the combinations of elements, arrangements of parts and features of construction, all as will be more fully pointed out hereinafter and disclosed in the accompanying drawing wherein there is shown apreferred embodiment of this inventive concept.

In the drawing:

Figure 1 is an exploded perspective view of the extractor comprising the instant invention.

Figure 2 is a longitudinal sectional view through the extractor showing its association with a radio tube in one position of adjustment.

Figure 3 is a view similar to Figure 2 but showing the extractor in a different position of adjustment.

Having reference now to the drawing wherein similar reference characters refer to similar parts, the extractor is comprised of a tubular sleeve ill provided with a handle member II which comprises one element of the device, the other element being comprised of a pair of spaced jaws l2 and I2 connected by a resilient handle l3. Each of the jaws I2 is of semi-conical shape, and provided in its lower portion with a series of splits or slots 14 to provide a plurality of extending tongues I5. Each of the tongues I5 has on its outer face a wedge-shaped member 16 tapered upwardly toward the apex of the conical jaw.

In the operation of the device, the two jaws l2 and I2 are positioned about a radio tube 11, as best shown in Figure 2, the tube illustratively being the type which is provided with a base flange [8. The sleeve in is then slipped Over the jaws l2 and I2 and slipped downwardly to the position shown in Figure 3. The sleeve Ill acts on the wedges I6 to compress the jaws tightly about the tube, and when forced downwardly to the extent permitted by the shape of the wedges, the two handles II and I3 may be grasped together and the unit, which is now firmly clasped about the radio tube may be lifted extracting the tube readily and easily from its socket. Obviously, the reverse of the operation may be carried out, and the tube inserted in a socket in a relatively confined space, whereupon upward movement of the sleeve It will permit release of the jaws l2 and I2, leaving the tube in position.

From the foregoing it will now be seen that there is herein provided an improved tube extractor, accomplishing all the objects of this invention and others including many advantages of practical utility and commercial importance.

As many embodiments may be made of this inventive concept, and as many modifications may be made of the embodiment hereinbefore shown and described, it is to be understood that all matter herein is to be interpreted merely as illustrative and not in a limiting sense.

I claim:

A radio tube extractor comprising a sleeve, a pair of arcuately bowed members tapered in width from their upper to their lower edges and positioned for axial movement in said sleeve,

resilient means connecting the tapered members at their upper extremities biasing the lower extremities radially outwardly against said sleeve, wedge members on the lower exterior surface of said tapered members for engagement by said sleeve, said tapered members being axially slotted to permit expansion and contraction thereof and defining wedge-shaped fingers, said fingers having smooth inner surfaces for gripping without marring the base of a radio tube, said wedge members being positioned medially and axially upon the fingers and engageable simultaneously by said sleeve to collapse said fingers for gripping engagement.

JOSEPH WILLIAM WHITNEY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,456,943 Smith May 29, 1923 2,320,043 Merkle May 25, 1943 2,380,136 Whitney July 10, 1945 2, 82,170 Phillips Aug. 14, 1945 

